Last year one of my tenants asked if she could run a small online resale business out of her 2-bedroom unit — just a laptop, a shelf of inventory, and a few packages going out through the local post office each week. My first reaction was hesitation, because in 15 years of managing 9 rental properties myself, home businesses are one of the requests I’ve had to think through most carefully before answering.
Some home businesses are genuinely no different from a tenant who works remotely for an employer. Others bring foot traffic, noise, extra wear, or insurance gaps that can cost a landlord tens of thousands of yen — or much more — if something goes wrong. Here’s how I actually decide.
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Before I even get to risk, I ask the tenant to describe exactly what the business involves. There’s a huge difference between someone doing freelance graphic design on a laptop and someone running a small cooking class for 6 people every Saturday. I break requests into three rough categories: quiet desk-based work (writing, coding, bookkeeping), low-traffic craft or resale work (handmade goods, online reselling, tutoring one student at a time), and anything involving regular visitors, deliveries, or equipment. Only the first two categories get serious consideration from me. The third almost always gets a no, or at least a long conversation first.
The Real Risks I Weigh Before Saying Yes
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When I’m on the fence, I think through four specific risks:
- Increased wear on floors, entryways, and shared stairwells from extra foot traffic or deliveries
- Liability if a customer or client is injured while visiting the unit
- Noise or parking complaints from neighbors, especially in my properties with 4 or fewer units
- Whether the activity violates my mortgage terms or the building’s zoning, since several of my properties are zoned residential-only
That last point trips people up. In Japan, running a registered business (individual proprietorship or otherwise) from a rented residential unit can technically require the landlord’s written consent, and in some cases it affects how the unit is classified for tax and zoning purposes. I’ve had two tenants over the years who wanted to register their home address as a business address for invoicing purposes, and I said yes to both — but only after confirming with my local ward office that it wouldn’t change the building’s zoning status.
My Screening Checklist
Once a tenant brings me a business request, I walk through the same five questions every time, in writing, so there’s a record of what was approved:
- Will there be regular visitors or deliveries beyond what a typical household receives?
- Does the business require any physical alteration to the unit (shelving bolted to walls, extra electrical load, ventilation)?
- Is inventory being stored in quantities that increase fire risk or exceed normal household storage?
- Does the tenant carry any liability coverage, even a basic renter’s policy with a small business rider?
- Is the activity legal to conduct from a residential address under local zoning rules?
If a tenant can answer all five cleanly, I usually approve it within a few days. If even one answer is unclear, I ask for details before deciding, and I never approve verbally — everything goes into a lease addendum.
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This is the part I learned the hard way. Early on, I approved a tenant’s small tutoring business without updating anything in writing, and when a parent slipped on the entryway steps during winter, my standard landlord policy didn’t clearly cover a business-related visitor. Since then, every home business approval comes with three conditions built into a signed addendum: the tenant must carry renter’s insurance with at least 10 million yen in liability coverage, business hours are capped (I typically allow visitor-facing activity only between 9am and 7pm), and the tenant agrees the approval can be revoked with 30 days’ notice if neighbors complain more than twice in a 6-month period. That last clause has only been used once, but having it in the lease from day one made that conversation far less stressful than it would have been otherwise.
When I Say No
I turn down roughly 1 in 4 home business requests across my properties, and the pattern is consistent: anything involving cash-heavy retail with regular customer foot traffic, anything requiring commercial-grade equipment (kilns, large power tools, restaurant-style cooking), or anything that would mean 5 or more non-resident visitors per week. I also say no if the tenant can’t clearly explain what insurance they carry, because that gap is exactly what turns a minor incident into a legal headache. I’d rather lose a slightly higher rent premium than deal with a liability claim that drags on for months.
How I’ve Made It Work
The tenants I’ve approved have mostly been excellent long-term renters — in fact, three of my current home-business tenants have stayed more than 4 years, longer than my property average of about 2.5 years. A tenant running a sustainable side business tends to be financially stable and motivated to keep the relationship smooth, which matters more to me than an extra few thousand yen a month. The key has always been getting specifics upfront, putting the terms in writing, and confirming the insurance piece before move-in day rather than after a problem occurs.
That’s the approach I use across all 9 of my properties, and it’s saved me from more than one headache I saw other landlords deal with the hard way.
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15 years of landlord experience u00b7 3 apartment buildings u00b7 DIY renovations that saved millions of yen. Browse all articles at diytosan.com
